Stutter No More (Dr. Martin Schwartz) online book: http://www.stutter-no-more.com/toc.html [pdf: http://www.stutter-no-more.com/Stutter_No_More.pdf] I also found a 5-part youtube series by Peter Louw who went through Dr. Schwartz's therapy to be useful: https://www.youtube.com/watch?v=EJimTW9x9UA [The Passive Airflow Technique] And here's a pdf version of Self Therapy for the Stutterer: http://www.stutteringhelp.org/portals/english/book_0012_tenth_ed.pdf